(a) Applying Cristian's algorithm for time synchronisation, a client's clock sends a request at time 3:07:58, the server response with time stamp of 3:08:20. The client receive the response at 3:08:02. Calculate is the time at the client after synchronisation? (b) There are four nodes on your network: A, B, C. and D Prior to synchronisation, A's clock reads 2:30, B's clock reads: 2:36, and C's clock reads 2:42 and D's clock read 11:30. Node B is the coordinator. After synchronisation via the Berkeley algorithm, what is the time on D's clock? Describe how did you reach your answer. (c) Consider the following three processes P1, P2 and P3 with the following pattern of communication: P1- P2- P3 a h i. Calculate the value of vector timestamp for each event. You can assume that all logical clocks start initially with zeroes. ii. Which events are concurrent with event e?